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Amrex MS324A User Manual

Low volt ac stimulator
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MS324A
*
Low Volt AC Stimulator
User's Guide
Amrex
®
electrotherapy equipment
a division of Amrex-Zetron, Inc.
*Federal law (USA) restricts this device to sale by or on the order of a licensed practitioner licensed by the law of the state in which
he practices to use or order the use of this device.

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Summary of Contents for Amrex MS324A

  • Page 1 ® electrotherapy equipment a division of Amrex-Zetron, Inc. *Federal law (USA) restricts this device to sale by or on the order of a licensed practitioner licensed by the law of the state in which he practices to use or order the use of this device.
  • Page 2 MS324A User's Guide Low Volt AC Stimulator Revised February 2014 Copyright © Amrex-Zetron, Inc. 1995. All rights reserved. Printed in the United States of America The following are registered or trademarked by Amrex: Amrex ® SynchroSonic ® Flextrode ® AMREX electrotherapy equipment ®...
  • Page 3 The MS324A is designed for the application of low volt ac muscle stimulation. The Amrex MS324A Low Volt AC Stimulator is a dual channel, four pad, low voltage electrical muscle stimulator that produces pulsation, tetanize, surge and reciprocal output.

  • Page 4: Limited Warranty

    Amrex strongly recommends that servicing be referred to the factory. Call toll free (800) 221-9069. Save the original shipping carton and all packing materials to safely return Amrex equipment to the factory for service; repair; annual calibration, electrical and mechanical safety check. All accessories, including the ac line cord, must be included with the returned instrument.

  • Page 5: Contraindications-Warnings-Precautions

    Important AMREX Intensity Reset Circuit: The Amrex Low Volt AC Stimulator incorporates a unique safety reset function as part of the intensity controls. This is to prevent any sudden or inadvertent...
  • Page 6 Electrical Muscle Stimulation—Contraindications Contraindicated for patients with cardiac demand pacemakers. Should not be used on cancer patients. Electrical Muscle Stimulation—Warnings Long term effects of chronic electrical stimulation are unknown. Safety has not been established for the use of electrical muscle stimulation during pregnancy.

  • Page 7: Table Of Contents

    Power Section ........................5 Part 3 Low Volt AC Stimulator Modality ..................9 Part 4 MS324A General Operation and Application Procedures ..........15 General Operation ........................15 Application of Electrical Muscle Stimulation ................. 17 Adverse Effects - Shortwave Diathermy Interference ............18 Electrical Muscle Stimulation—Indications ................

  • Page 9: Part 1 Overview

    Part 1 AMREX Overview The layout of the MS324A panel consists of controls, indicator lights, and output jacks. Low Volt AC Stimulator Power / Timer Reset Intensities Minimum Minimum Maximum 0 / Reset Maximum 0 / Reset Output Rate Output Rate...
  • Page 10 Part 1 In the illustration below, dashed lines surround each of the MS324A's sections. A brief description of each section follows the illustration, and Parts 2 and 3 of this manual contain detailed descriptions. Low Volt AC Stimulator Power / Timer...
  • Page 11 Select either pulsation, tetanize, surge or reciprocal output using the Output Mode control. Regulate the frequency of the pulses, or adjust the duration of the surge or reciprocal, with the Pulse/ Surge Rate control. MS324A User's Guide...
  • Page 12 Part 1 MS324A User's Guide...

  • Page 13: Power Section

    Part 2 AMREX Power Section In the illustration below, dashed lines surround the MS324A's power section. Low Volt AC Stimulator Power / Timer Reset Intensities Minimum Minimum 0 / Reset Maximum 0 / Reset Maximum Output Rate Output Rate MS324A User's Guide...
  • Page 14 Part 2 The power section of the MS324A panel is depicted below. Items referenced with circled numbers (1 – 4) are explained on the following page. Power / Timer Reset Intensities Minimum Minimum 0 / Reset Maximum 0 / Reset...
  • Page 15 2. ON INDICATOR LIGHT: Will illuminate when the Power/Timer is activated. 3. AC RECEPTACLE: Connection for MS324A's ac power cord. 4. VELCRO WASHER: To attach wall mount velcro bracket strap. MS324A User's Guide...
  • Page 16 Part 2 MS324A User's Guide...

  • Page 17: Low Volt Ac Stimulator Modality

    Part 3 AMREX Low Volt AC Stimulator Modality In the illustration below, dashed lines surround the MS324A's low volt ac stimulator section. Low Volt AC Stimulator Power / Timer Reset Intensities Minimum Minimum Maximum Maximum 0 / Reset 0 / Reset...
  • Page 18 Part 3 The low volt ac stimulator section of the MS324A panel is depicted below. Items referenced with circled numbers (5 – 8) are explained on the following page. Reset Intensities Minimum Minimum Maximum Maximum 0 / Reset 0 / Reset...
  • Page 19 Note: The Low Volt Intensity control for Channel A has a unique reset circuit feature which prevents the practitioner from applying one patient's treatment settings to another patient. The AMREX Reset Circuit also allows the continuation or extension of the patient's treatment period if power is restored within ten (10) seconds.
  • Page 20 Part 3 The low volt ac stimulator section of the MS324A panel is depicted below. Items referenced with circled numbers (9 – 14) are explained on the following page. Reset Intensities Minimum Minimum Maximum 0 / Reset Maximum 0 / Reset...
  • Page 21 When power is restored within ten (10) seconds after being interrupted or turned off, or within ten (10) seconds after the treatment period has been completed and the bell has sounded, the AMREX Reset circuit will be bypassed and the Reset Intensities indicator light will not illuminate. This will allow the continuation or extension of the patient's treatment period.
  • Page 22 Part 3 MS324A User's Guide...

  • Page 23: Ms324A General Operation And Application Procedures

    MS324A General Operation and Application Procedures General Operation 1. Connect the MS324A's ac power cord to the MS324A's ac receptacle and plug the "Hospital Grade" connector to a properly grounded 120Vac, 60Hz receptacle. 2. Connect the patient "Treatment Stop" Switch to the "TREATMENT STOP"...
  • Page 24 Reduce the Intensity controls for Channel A and Channel B to the 0/Reset position enabling the audible "clicks". Thoroughly clean the pad(s) with warm water and dispose of the used cloth cover(s). MS324A User's Guide...

  • Page 25: Application Of Electrical Muscle Stimulation

    Apply a generous amount of Flextrode Conductive Spray to the moistened cloth cover. If the Flextrode Conductive Spray is not desired, apply a generous amount of Amrex Conductance and Coupling Gel to the thoroughly moistened Flextrode cloth cover. A generous amount of Flextrode Conductive Spray or Amrex Conductance and Coupling Gel is required to insure good conductivity.

  • Page 26: Adverse Effects - Shortwave Diathermy Interference

    In all cases, it would be very dangerous to give shortwave diathermy and low volt ac stimulator treatment to a patient simultaneously. Any patient who reports a sudden, unexplainable "surge" in output may be experiencing the effects of shortwave interference. MS324A User's Guide...

  • Page 27: Electrical Muscle Stimulation-Indications

    MS324A General Operation and Application Procedures Electrical Muscle Stimulation—Indications Relaxation of muscle spasms Prevention or retardation of disuse atrophy Increased local blood circulation Muscle reeducation Maintenance of or increase in range of motion Immediate postsurgical stimulation of calf muscles to prevent venous...

  • Page 28: Electrical Muscle Stimulation-Precautions

    The irritation can usually be reduced by use of an alternate conductive medium or alternate electrode placement. Skin irritation and burns beneath the electrodes have been reported with the use of electrical muscle stimulators. MS324A User's Guide...

  • Page 29: Specifications

    Tetanize Mode ........80 pps Surge Mode ..........80 pps Reciprocal Mode ........80 pps Surge Duration (seconds) ....variable from 3.75 on/off to 0.375 on/off Reciprocal Duration (seconds) ..variable from 3.75 on/off to 0.375 on/off MS324A User's Guide...
  • Page 30 To maintain original design specifications, your Amrex stimulator must be calibrated and safety tested on an annual basis. Amrex strongly recommends that servicing be referred to the factory. Call toll free (800) 221-9069.

  • Page 31: Appendix B References

    Springer-Verlag, Berlin, West Germany, 1986. Nyborg, W.L. and M.C. Ziskin, ed. Biological Effects of Ultrasound. Vol. 16 of Clinics in Diagnostic Ultrasound. Churchill Livingstone, New York, 1985. Peat, Malcolm, ed. Current Physical Therapy. B.C. Decher, Inc., Philadelphia, Pennsylvania, 1988. MS324A User's Guide...
  • Page 32 Appendix B MS324A User's Guide...

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